What does HRESULT 0x80190196 (HTTP_E_STATUS_NONE_ACCEPTABLE) mean?

 
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HTTP_E_STATUS_NONE_ACCEPTABLE

HTTP_E_STATUS_NONE_ACCEPTABLE maps to HTTP 406 Not Acceptable. The server could not produce a representation acceptable under the proactive content-negotiation headers sent by the client.

What to check for HTTP_E_STATUS_NONE_ACCEPTABLE

  • Review Accept, Accept-Language, Accept-Encoding, and any custom negotiation headers.
  • Confirm that the client permits a media type and character set the endpoint actually serves.
  • Check whether an API gateway rewrites or narrows the request headers before they reach the application.

RFC 9110: 406 Not Acceptable

Diagnostic interpretation of HTTP_E_STATUS_NONE_ACCEPTABLE

HTTP_E_STATUS_NONE_ACCEPTABLE has the HRESULT value 0x80190196. AllStat records the condition as “Not acceptable (406).”. For HTTP_E_STATUS_NONE_ACCEPTABLE, in practice, interpret that wording at the boundary owned by the Windows component or COM interface that returned the HRESULT, rather than treating the value as a generic Windows message.

Evidence to capture for HTTP_E_STATUS_NONE_ACCEPTABLE

  • Record the exact COM method or Windows API, its input object, the calling thread, and the full 0x80190196 value before a wrapper converts it to an exception or Boolean result.
  • Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions HTTP_E_STATUS_NONE_ACCEPTABLE or the none / acceptable operation.
  • For HTTP_E_STATUS_NONE_ACCEPTABLE, check the documented return contract of the specific API because the same HRESULT can require different recovery in different interfaces.

Retry and recovery for HTTP_E_STATUS_NONE_ACCEPTABLE

Retry HTTP_E_STATUS_NONE_ACCEPTABLE only when the owning API documents a transient state or after the condition described as “Not acceptable (406).” has changed. For HTTP_E_STATUS_NONE_ACCEPTABLE, configuration, policy, format, and authorization failures normally require correction first; an immediate loop can hide the original call site and add secondary errors.

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